Image capturing apparatus, image capturing method, and storage medium using compressive sensing
First Claim
1. An image capturing apparatus comprising:
- a light intensity distribution acquirer configured to acquire a light intensity distribution in an object space through image capturing using a plurality of pixels;
a coefficient distribution setter configured to set a coefficient distribution that is a distribution of a coefficient corresponding to each of the plurality of pixels and is to be applied to the light intensity distribution, such that the coefficient distribution is different for each image capturing condition;
an information acquirer configured to acquire object space information that is information on the object space and different from the light intensity distribution;
a pixel group setter configured to set a first pixel group and a second pixel group that are different from each other in the plurality of pixels, based on the object space information; and
an image generator configured to generate a combined image by combining a plurality of light intensity distributions obtained by applying the coefficient distribution to each of a plurality of light intensity distributions obtained on a plurality of image capturing conditions,wherein the coefficient distribution setter sets a first coefficient distribution as at least one of the plurality of coefficient distributions applied to each of the plurality of light intensity distributions, such that fundamental statistics of the coefficient distribution for the first pixel group is different from that for the second pixel group in the first coefficient distribution.
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Abstract
An image capturing apparatus acquires a light intensity distribution in an object space through image capturing using a plurality of pixels, sets a coefficient distribution that is a distribution of a coefficient corresponding to each of the plurality of pixels and is to be applied to the light intensity distribution, acquires object space information that is information on the object space and different from the light intensity distribution, sets first pixel group and second pixel groups that are different from each other in the plurality of pixels based on the object space information, and generates a combined image by combining a plurality of light intensity distributions obtained by applying the coefficient distributions to each of the plurality of pixels obtained with a plurality of image capturing conditions.
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Citations
15 Claims
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1. An image capturing apparatus comprising:
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a light intensity distribution acquirer configured to acquire a light intensity distribution in an object space through image capturing using a plurality of pixels; a coefficient distribution setter configured to set a coefficient distribution that is a distribution of a coefficient corresponding to each of the plurality of pixels and is to be applied to the light intensity distribution, such that the coefficient distribution is different for each image capturing condition; an information acquirer configured to acquire object space information that is information on the object space and different from the light intensity distribution; a pixel group setter configured to set a first pixel group and a second pixel group that are different from each other in the plurality of pixels, based on the object space information; and an image generator configured to generate a combined image by combining a plurality of light intensity distributions obtained by applying the coefficient distribution to each of a plurality of light intensity distributions obtained on a plurality of image capturing conditions, wherein the coefficient distribution setter sets a first coefficient distribution as at least one of the plurality of coefficient distributions applied to each of the plurality of light intensity distributions, such that fundamental statistics of the coefficient distribution for the first pixel group is different from that for the second pixel group in the first coefficient distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An image processing apparatus installed in or separate from an image capturing apparatus,
wherein the image capturing comprising: -
a light intensity distribution acquirer configured to acquire a light intensity distribution in an object space through image capturing using a plurality of pixels; a coefficient distribution setter configured to set a coefficient distribution that is a distribution of a coefficient corresponding to each of the plurality of pixels and is to be applied to the light intensity distribution, such that the coefficient distribution is different for each image capturing condition; an information acquirer configured to acquire object space information that is information on the object space and different from the light intensity distribution; a pixel group setter configured to set a first pixel group and a second pixel group that are different from each other in the plurality of pixels, based on the object space information; and an image generator configured to generate a combined image by combining a plurality of light intensity distributions obtained by applying the coefficient distribution to each of a plurality of light intensity distributions obtained on a plurality of image capturing conditions, wherein the coefficient distribution setter sets a first coefficient distribution as at least one of the plurality of coefficient distributions applied to each of the plurality of light intensity distributions, such that fundamental statistics of the coefficient distribution for the first pixel group is different from that for the second pixel group in the first coefficient distribution, and wherein the image processing apparatus comprises an image estimator configured to generate image data through an estimation process, which corresponds to at least one of the plurality of image capturing conditions based on the combined image.
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14. An image capturing method comprising:
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a step of acquiring a light intensity distribution in an object space through image capturing using a plurality of pixels; a coefficient distribution setting step configured to set a coefficient distribution that is a distribution of a coefficient corresponding to each of the plurality of pixels and is to be applied to the light intensity distribution, such that the coefficient distribution is different for each image capturing condition; a step of acquiring object space information that is information on the object space and different from the light intensity distribution; a step of setting a first pixel group and a second pixel group that are different from each other in the plurality of pixels, based on the object space information; and a step of generating a combined image by combining a plurality of light intensity distributions obtained by applying the coefficient distribution to each of a plurality of light intensity distributions obtained on a plurality of image capturing conditions, wherein the coefficient distribution setting step sets a first coefficient distribution as at least one of the plurality of coefficient distributions applied to each of the plurality of light intensity distributions, such that fundamental statistics of the coefficient distribution for the first pixel group is different from that for the second pixel group in the first coefficient distribution.
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15. A non-transitory computer readable storage medium storing an image capturing program that enables a computer to execute an image capturing method, the image capturing method comprising:
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a step of acquiring a light intensity distribution in an object space through image capturing using a plurality of pixels; a coefficient distribution setting step configured to set a coefficient distribution that is a distribution of a coefficient corresponding to each of the plurality of pixels and is to be applied to the light intensity distribution, such that the coefficient distribution is different for each image capturing condition; a step of acquiring object space information that is information on the object space and different from the light intensity distribution; a step of setting a first pixel group and a second pixel group that are different from each other in the plurality of pixels, based on the object space information; and a step of generating a combined image by combining a plurality of light intensity distributions obtained by applying the coefficient distribution to each of a plurality of light intensity distributions obtained on a plurality of image capturing conditions, wherein the coefficient distribution setting step sets a first coefficient distribution as at least one of the plurality of coefficient distributions applied to each of the plurality of light intensity distributions, such that fundamental statistics of the coefficient distribution for the first pixel group is different from that for the second pixel group in the first coefficient distribution.
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Specification